712338 ÷ 91 
The aim is to understand the frequency of 91 in 712338.

Advancing to step 1:
7 divided by 91 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 91

Advancing to step 2:
If we divide 71 by 91, we get 0 and a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Fetch the next digit (2) from the dividend, attach it to 71 and continue: 712 / 91

Step 3:
712 divided by 91 is 7 with a remainder of 75.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 637 from 712 and we're left with 75.
Grab the next digit (3) from the dividend, add it to 75, then carry on: 753 / 91

Moving on to step 4:
When dividing 753 by 91, we get 8 with a remainder of 25.
Record the quotient 8 as the next digit in the result. 
Result so far: 78.0
Subtracting 728 from 753 leaves us with 25.
Take the next digit (3) from the dividend and append it to 25, then repeat: 253 / 91

On to step 5:
253 divided by 91 is 2 with a remainder of 71.
The next digit of our result is 2. 
Result so far: 782.0
The remainder is 71 after subtracting 182 from 253.
Fetch the next digit (8) from the dividend, attach it to 71 and continue: 718 / 91

Step 6:
718 divided by 91 is 7 with a remainder of 81.
Write down 7 as next digit of the result. 
Result so far: 7827.0
The remainder is 81 after subtracting 637 from 718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 7:
If we divide 810 by 91, we get 8 and a remainder of 82.
Record the quotient 8 as the next digit in the result. 
Result so far: 7827.8
If we take 728 away from 810, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 8:
91 can be fit into 820 9 times, resulting in a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 7827.89
Subtract 819 from 820 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
When dividing 10 by 91, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 7827.89
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
91 goes into 100 1 times with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 7827.8901
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 11:
If we divide 90 by 91, we get 0 and a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 7827.8901
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 12:
The number 91 fits into 900 9 times, leaving a remainder of 81.
The next digit of our result is 9. 
Result so far: 7827.890109
Subtracting 819 from 900 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 13:
If we divide 810 by 91, we get 8 and a remainder of 82.
Record the quotient 8 as the next digit in the result. 
Result so far: 7827.8901098
If we take 728 away from 810, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 14:
When dividing 820 by 91, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 7827.89010989
Subtracting 819 from 820 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 7827.89010989, with a leftover of 1e-09.